| 摘要 |
<p>PURPOSE:To allow transfer of a pole or the like without requiring reconnection of cable by opening a cut face and containing the cable in a protective pipe. CONSTITUTION:A cut face 22 is opened and a cable is contained in a protective pipe 10. Since crest parts 12 and valley parts 18 are formed continuously in the circumferential direction (wave structure), the cut face 22 can be opened easily. The crest parts 12 and valley parts 14 are also formed in the axial direction (wave structure), the protective pipe 10 can be bent with an arbitrary curvature.</p> |
